I was not able to configure dual head. One way is to push FN + F3 button before X server starts, and then start it. HorizSync and VertRefresh is for my external monitor. But on resolution more that 1024x768 you can see a bug: two thin lines at left and right are swapped.

Other resolution only for external monitor. You will be able to change them with xrandr.

SOUND

Works poorly in Linux. Alsa is able to determine driver, but SPDIF doesn't work and external microphone too. Luckily internal microphone (above LCD) works good, though you can't change its' volume or disable it in alsamixer.